For more info you can google some of David Wrobel's articles (
http://www.aquariumfish.com/aquariumfish/detail.aspx?aid=9570&cid=3793&search), get his book
The Temperate Reef Aquarium, or get Roland Anderson's book (very good)
Aquarium Husbandry of Pacific Northwest Marine Invertebrates, or peruse the husbandry info on
www.foreshores.net. There's also a good thread on AC:
http://www.aquariacentral.com/forums/showthread.php?t=123490&highlight=coldwater
and some cool info I just found somewhere:
A juvenile painted greenling,
Oxylebius pictus , about an inch (2.5 cm) resting on the oral disc of the strawberry anemone,
Urticina lofotensis , in the cool waters of an inlet on Vancouver Island.
Numerous other fishes live in close proximity to sea anemones throughout the world's oceans, but until recently it was thought the Indo-Pacific host anemones harbored the only true "anemonefish" mutualism, where the fish was immune to the host's stinging capabilities. Recent work has shown that in the cool waters of the NE Pacific, there is another true anemonefish (Elliott, 1992). This fish is
Oxylebius pictus , the convict fish or painted greenling, of the Pacific Coast of North America. The host anemones in this case are found in the genus Urticina . The fish is mostly found with the strawberry anemone,
Urticina lofotensis , but occasionally with other species such as the fish-eating anemone,
Urticina piscivora , as well. These anemones lack zooxanthellae altogether and are often predatory on fish, and they possess quite virulent stings. The sting of
Urticina piscivora is sufficiently potent to cause long-lasting necrotic lesions on humans.
An adult painted greenling,
Oxylebius pictus , resting around the base of the strawberry anemone,
Urticina lofotensis at night. The fish is about 5 inches (12.5 cm) long.
